从T-DNA突变体库中获得一份以中花11为遗传背景的白色中脉突变体。该突变体剑叶以下叶片的中下部中脉表现为白色,白色中脉附近的叶色微黄,并且伴随株高等农艺性状的改变,暂时将其定名为Oswm2(Oryza sativa white midrib2)。遗传分析表...从T-DNA突变体库中获得一份以中花11为遗传背景的白色中脉突变体。该突变体剑叶以下叶片的中下部中脉表现为白色,白色中脉附近的叶色微黄,并且伴随株高等农艺性状的改变,暂时将其定名为Oswm2(Oryza sativa white midrib2)。遗传分析表明该突变性状受一对隐性单基因控制,以Oswm2和粳稻02428杂交的F2分离群体作为定位群体,将OsWM2基因定位在水稻第7染色体的SSR标记RM21478和RM418之间,遗传距离分别为8.7和15.9cM。展开更多
Under drought treatment conditions,102 shares of different rice（Oryza sativa） varieties were clustered using the agronomic traits including productive ears,grains per ear,1 000-grain weight,plant height and grain we...Under drought treatment conditions,102 shares of different rice（Oryza sativa） varieties were clustered using the agronomic traits including productive ears,grains per ear,1 000-grain weight,plant height and grain weight per plant as indicators.The results showed that the materials tested could be classified into 5 groups.Of the five groups,group Ⅴ showed highest drought resistance（mean Dc value reached 84.88）,and could therefore be used as parent materials for drought cultivar breeding;groupⅡexhibited a mean Dc value of 75.64,among these materials some individuals performed excellent traits and could be used as special materials;group Ⅳ showed the lowest mean Dc value（45.9）,indicating no drought resistance;groupⅠand group Ⅲ performed as ordinary.展开更多
文摘从T-DNA突变体库中获得一份以中花11为遗传背景的白色中脉突变体。该突变体剑叶以下叶片的中下部中脉表现为白色,白色中脉附近的叶色微黄,并且伴随株高等农艺性状的改变,暂时将其定名为Oswm2(Oryza sativa white midrib2)。遗传分析表明该突变性状受一对隐性单基因控制,以Oswm2和粳稻02428杂交的F2分离群体作为定位群体,将OsWM2基因定位在水稻第7染色体的SSR标记RM21478和RM418之间,遗传距离分别为8.7和15.9cM。
基金Supported by Key Program of Chongqing Municipality (CSTC,2007AC1061)~~
文摘Under drought treatment conditions,102 shares of different rice（Oryza sativa） varieties were clustered using the agronomic traits including productive ears,grains per ear,1 000-grain weight,plant height and grain weight per plant as indicators.The results showed that the materials tested could be classified into 5 groups.Of the five groups,group Ⅴ showed highest drought resistance（mean Dc value reached 84.88）,and could therefore be used as parent materials for drought cultivar breeding;groupⅡexhibited a mean Dc value of 75.64,among these materials some individuals performed excellent traits and could be used as special materials;group Ⅳ showed the lowest mean Dc value（45.9）,indicating no drought resistance;groupⅠand group Ⅲ performed as ordinary.
